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Full minimax characterization for tensor normal factor estimation beyond the largest factor
Sourced from the work of Rafael Mendes de Oliveira, William Cole Franks, Akshay Ramachandran, Michael Walter
§ Problem Statement
§ Discussion
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§ Significance & Implications
§ Known Partial Results
§ References
[1]
Near Optimal Sample Complexity for Matrix and Tensor Normal Models via Geodesic Convexity
Rafael Mendes de Oliveira, William Cole Franks, Akshay Ramachandran, Michael Walter (2021)
Annals of Statistics (to appear)
📍 Section 8 (Conclusion and open problems), unnumbered paragraph discussing tensor normal minimax rates beyond the largest factor (no numbered conjecture/remark; page not explicitly determined).
Source paper where this problem appears.